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An auto race is held on a circular track. A car completes onelap in a time of 21.5 seconds, with an average tangential speeed of38.1 m/s.
What is the average angular speed?
What is the radius ofthe track?
what happens to light of a particular frequency when it is incident upon the material that natural frequency is the same as the frequency of the light.
An engine delivers 40.0 J of work while it takes in energy from a 400 K thermal source. find the least amount of heat needed to run the engine
q1. a 20 g rifle bullet travelling 215 ms buries itself in a 3.7 kg pendulum hanging on a 2.8 m long string which makes
Intelligent beings in a distant galaxy send a signal to earth in the form of an electromagnetic wave. What is the speed vrel of the galaxy relative to the earth
A 0.480 kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 24.0 N/m. How far does the putty-block system compress the spring
A block of mass m slides along a level surface. The coefficient of kinetic friction between the block and the surface is ?. If the block has an initial speed v0, how far will it travel before coming to rest? Show how you arrived at your answer. Repea..
A Styrofoam ball of mass 0.120 g is placed in an electric field of6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?
In Fig. 22-30 the electric field lines on the left have twice theseparation as those on the right. (a) Ifthe magnitude of the field at A is 58 N/C, what is the magnitude ofthe force on a proton at A?
It is desired to construct a solenoid that will have a resistance of5.20(at 20°C) and produce a magnetic field of 4.00multiplied by10-2T at its center when it carries a current of3.40A. determine the length the solenoid should have
What is the angular velocity of the disk. If a single bit requires 5 µm of length along the motion direction, how many bits/second can the writing head write when it is 3.0 cm from the axis? display all work and explanations.
Discuss where the theory stands today in terms of acceptance. Does the theory violate the speed of light limitation on how fast objects can more? Does it predict the current size of the universe. Can we see across the universe?
A thermodynamic system is taken from state A to state B tostate C, and then back to A. What is the net work done by the system as it moves once through the cycle ABCA
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